Valve



June 9, 1925.

V- V. VEENSCHOTEN VALVE Filed Sept. 15, 1921 fig. 3.v

/N VEN T 0R X/I/NCfNTVVEL-Nsmonf ATTORNEY Patented June 9, 1925.

UNITED omc-1a.

VINCENT V. VEENSCHOTEN, OF EREE, PENNSYLVANIA., .SSlGNGR TO NORTHERN EQUIPMENT C0., OF ERIE, EENNSYLVANIA, A GRPOBATION 01E "ElNN SYI'JVvLtN'Il-l.i.`

VALVE. i

applicati@ filed september '15, 1921. vserial No. 500,753,

To ./ZZ whom fit may concern.'

Beit known that I, VINCENT VEnNsoi-ro'rnn, a citizen of the Il ited States, residing at Erie, the county of Erie and `State `of Pennsylvania, have invented certain neiv and useful lniinovements in Valves, of which the following is ka specification.

This invention `relates to valves and particularly to feed-Water valves for boilers in which the vali/'es are controlled by feedwater regulators. It has for its object the production of valve, the effective size of which can be adjusted Without interfering` with the operation of the valve or its control by means of the regulator or any other device.

It is obvious that the rate of flow of a fluid through a valvedepends upon the magnitude of the opening through the valve as weil as upon the fall in pressure through the valve; and, while the opening through the valve is ordinarily easily controlled so as to vary the flow of the fluid therethrough,

yet it is often desired to control this opening otherwise during the normal operation of the valve, particularly when it is used. as a feed-Water valve for boilers. By the use of my adjustable valve variations in the size of the valve opening can be made Without changing the valve itself and without ii any way interfering with the automatic control of the valve.

)is an example of the use of such falvo when a battery of similar boilers is used and supplied with water bya single pump, it is common to install similar feed-Water valves. But, in such a case, the boiler most remote from the pump will require a larger opening through the feed-Water valve, in order to supply feed-Water at the same rate as the other boilers, as the drop in pressure through the remote valve will be less. And it is obvious that the pressure will depend upon the steam pressure of the boilers and other conditions that may vary from time to time. Hence, in such eases, it is Vdesirable to be able to adjust the valve opening according to the particular needs of the boiler, either temporarily or permanently, irrespectivev of the control of the valve by the regulator.

Of the accompanying drawings Fig. l s an elevation, more or less diagrammatic, of a boiler and its feed-Water system, the valve of which embodies features of my inis movable with reference to the seat.

plunger is arranged to be moved longitudi vention; Fig; 2 is a central sectional view ofthe valve; Fig. 3 is a section along the line'T-TB of Fig, 2; and Fig. 4 is an elevation of one endiof the valve. A i i `T he feed-Walter valve iis operated in any ordinary manner by means of the ,feed-water regulator 6 `which is of an ordinary type. and Which is mounted substantiallyL atl the same elevation as the avorage44 Water-level in 9 and has rotatably mounted in this partif tion a cylindrical valve-seat 10. l prefer to mount this seat in the partition by threadingit in the partition as indicated` and l provide means for rotating the seat in the threads. Any suitable means for this purpose may be provided, but I prefer a ring- 11, .fixed rigidly to the end of the seat l` having a yoke 12 to which is fixed a stein 1 8 which passes out of the casing of the valve through a stufng-box 14. Fixed to the outer end of the stein is a quadrant 15, which has an elongatedarouate slot 16 on its outer end arranged for receiving a pin 17 which is fixed to the casing of the valve. By .means f the quadrant 15 the stem 13 together with the valve seat can be rotated as desired, and by means of the lock-nuts 18 the seat can be locked in its adjusted position. A scale 29, with an index slot 30 in the pin 17,7indi- Cates the angular position of the seat.

Within the valve seat is mounted a Valve plunger 19 Which is nonrotatable but which nally in the seat by Vthe feed-Water regulator, by means of an arm 2O fixed to a spindle 21 which passes through a stufIing-box in the casing. The spindle has fixed thereto an arm 22, which, by means of a link 23 pivoted to the arm of the spindle, reciprocates the plunger in its seat lin any ordinary manner.

The valve-seat has openings 24, and the valve plunger has openings 25 which are adapted' to register with the openings 24 when the plunger and seat are in one rela- TheA tive position. As they are rotated relatively from this position, the openings are closed more or less, and are entirely closed upon rotating suiiiciently. However, the opening through the partition 9, from the valve inlet 26 to the valve outlet 27, depends upon the longitudinal position of the plunger in the seat, as is common. Hence, the relative rotation of the seat and plunger is effective in varying the opening through the valve only when the plunger Vhas been moved longitudinally in the seat sutliciently to open the ports through the partition 9.

As is common, Vthe plunger 19 has partitions 2S which close the openings in the partition 9 of the valve When the plunger is in the valve closing position, Fig. 2; and the outer diameter of the plunger and inner diameter of the seat, in line With these partitions when the valve is closed is such as to prevent leakage. But elsewhere the diameter of the plunger is slightly decreased and of the seat is slightly increased, so as to reduce friction particularly when the valve is more or less open.

I claim as my invention:

l. A valve casing having a partition therein With two opposing openings in said partition, a cylindrical member having its ends threaded respectively into said openings, a cylindrical plunger slidably mounted into said member, means for reciprocating said plunger, and means for rotating said member.

2. A valve having a plunger and a seat, means y for moving said plunger and seat relatively longitudinally,means for rotating said seat, and means for indicating-the angular position of the seat.

hand. Y

VIN GENT V. VEENSCHOTEN. p

In testimony whereof, I hereunto set my 40 

